Optical disc medium and data recording method and apparatus

Abstract

A molding and film forming apparatus 700 molds a disc substrate from a stamper 330 formed from an optical disc disc-master 320 and forms a coating film, for example, a reflective film onto the disc substrate, thereby forming a recorded optical disc 360 . A postscript apparatus 200 writes postscript information once onto an optical disc 340 formed by the molding and film forming apparatus 700 . As postscript information, a laser beam is irradiated to a predetermined interval of the optical disc 340 , a portion which is detected as a pit is formed, and an optical disc 350 on which postscript information 420 has been recorded is formed. Identification information which enables each optical disc 340 to be identified can be postscribed. The postscript information is recorded in a conventional format and the postscript information can be reproduced by an existing reproducing apparatus.

1. An optical disc medium having a substrate on which a shape according to modulated information data has been formed and a coating film formed on the substrate, wherein
 a no-modulating interval is provided in an arbitrary position in a subcoding portion or a data portion of said modulated information data and predetermined postscript information has been recorded into said no-modulating interval by recording said predetermined postscript information to said coating film, wherein said information data and said postscript information are respectively represented by pit patterns, and wherein the physical feature constraints of pits for said information data and said postscript information are substantially similar. 
 
     
     
       2. An optical disc medium according to  claim 1 , wherein said information data is main information. 
     
     
       3. An optical disc medium according to  claim 1 , wherein said information data is secondary information for control. 
     
     
       4. An optical disc medium according to  claim 1 , wherein said postscript information is disc identification information. 
     
     
       5. The optical disk medium according to  claim 1 , wherein said no-modulating interval is inserted arbitrarily into said modulated information and set in a manner such that a tracking servo can be performed to said optical disk medium. 
     
     
       6. An optical disc medium having a substrate on which a shape according to information data modulated by a modulating method in which a minimum inverting interval and a maximum inverting interval have been specified has been formed and a coating film formed on the substrate, wherein
 after error information which infringes the rule of said minimum inverting interval and said maximum inverting interval was recorded in a predetermined interval, information to correct said error information so as to satisfy said rule has been recorded in said predetermined interval adjacent to said error information by recording said information to correct said error information to said coating film. 
 
     
     
       7. An optical disc medium according to  claim 6 , wherein
 in said predetermined interval, secondary information is expressed by a combination of a portion where said error information has been recorded and a portion where postscript information to correct said error information has been recorded. 
 
     
     
       8. An optical disc medium according to  claim 6 , wherein said information data is main information. 
     
     
       9. An optical disc medium according to  claim 6 , wherein said information data is secondary information for control. 
     
     
       10. An optical disc medium according to  claim 6 , wherein said postscript information is disc identification information. 
     
     
       11. A data recording method of forming an optical disc medium having a substrate on which a shape according to modulated information data has been formed and a coating film formed on the substrate, wherein
 a no-modulating interval is provided in an arbitrary position in a subcoding portion or a data portion of said modulated information data and predetermined postscript information is recorded into said no-modulating interval by recording said predetermined postscript information to said coating film, wherein said information data and said postscript information are respectively represented by pit patterns, and wherein the physical feature constraints of pits for said information data and said postscript information are substantially similar. 
 
     
     
       12. The data recording method of forming an optical disk medium according to  claim 11 , wherein said no-modulating interval is inserted arbitrarily into said modulated information and set in a manner such that a tracking servo can be performed to said optical disk medium. 
     
     
       13. A data recording method of forming an optical disc medium having a substrate on which a shape according to information data modulated by a modulating method in which a minimum inverting interval and a maximum inverting interval have been specified has been formed and a coating film formed on the substrate, wherein
 after error information which infringes the rule of said minimum inverting interval and said maximum inverting interval was recorded in a predetermined interval, information to correct said error information so as to satisfy said rule is recorded in said predetermined interval adjacent to said error information by recording said information to correct said error information to said coating film. 
 
     
     
       14. A data recording apparatus for forming an optical disc medium having a substrate on which a shape according to modulated information data has been formed and a coating film formed on the substrate, wherein
 a no-modulating interval is provided in an arbitrary position in a subcoding portion or a data portion of said modulated information data and predetermined postscript information is recorded into said no-modulating interval by recording said predetermined postscript information to said coating film, wherein said information data and said postscript information are respectively represented by pit patterns, and wherein the physical feature constraints of pits for said information data and said postscript information are substantially similar. 
 
     
     
       15. The data recording apparatus for forming an optical disk medium according to  claim 14 , wherein said no-modulating interval is inserted arbitrarily into said modulated information and set in a manner such that a tracking servo can be performed to said optical disk medium. 
     
     
       16. A data recording apparatus for forming an optical disc medium having a substrate on which a shape according to information data modulated by a modulating method in which a minimum inverting interval and a maximum inverting interval have been specified has been formed and a coating film formed on the substrate, wherein
 after error information which infringes the rule of said minimum inverting interval and said maximum inverting interval was recorded in a predetermined interval, information to correct said error information so as to satisfy said rule is recorded in said predetermined interval adjacent to said error information by recording said information to correct said error information to said coating film.